<!doctype html>
<html>
  <head>
    <meta charset="utf-8">
    <style>
      html {
        box-sizing: border-box;
        height: 100%;
        width: 100%;
        border: 4px solid red;
      }
    </style>
  </head>
  <body>
  </body>
</html>
<title></title>
